For the first time I am growing a Loofah plant in the green house. If it turns out well and I get enough I would like to do one or all of the following: use them as actual loofahs in the bathroom, turn them into kitchen sink loofahs and also maybe slice them and set them in soap.

Wow!! 😃
Very clever idea look forward in seeing the finished result.x
How many have you grown and how long do they take to dry out? If you took a big one and cut it into more manageable sized pieces and made some soap they would make lovely Christmas gifts. To use them in the shower though get a piece of cotton rope and thread it through the loofah so that you can hang it up to dry because loofah's even the plastic scrubby kind grow a fungus inside them if they aren't allowed to dry out completely between showers
Wow.....a fab idea. x
Wow that sounds a brilliant idea Sally Ann , your very ingenious